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Datsun 1200, unlike the Datsun 1000, was designed with air conditioning in mind. However, it was still a dealer-installed add-on option and so varied by country and region. In April 1978 it became a factory option for Japanese market Sunny Truck. The interior cooler protrudes into the passenger legroom and precludes using a package tray.

1 Parts Needed
- 1.1 Compressor
- 1.2 Engine Brackets
  - 1.2.1 Late Engine
  - 1.2.2 Engine Brackets, Early
2 Left-hand Drive
3 Optional Fan
4 Sunny Truck Kit
5 Legroom
6 Misc
7 Photo Index

Parts Needed

Pump
Condensor (cooling radiator)
Double crankshaft pulley. (The extra pulley runs the compressor)
Under-dash vents
Hoses
Wiring

Since B110 A/C is fairly rare, you can source most of the parts from a B210 or B310. Only the interior vent setup is needed for a B110.

Compressor

The compressor pump bolts to the engine and is driven by a v-belt

Crankshaft pulley double belt

Engine Brackets

Various types were used. Early A12 and late A12 brackets differ.

Late Engine

For late model A12, there were two versions of brackets.

High-mount Pulley

Low-mount Pulley (1979-up)

New Compressor-type

Old compressor type (York-type)

1978 B120

V-belt: 810 or 814 mm

Engine Brackets, Early

Compressor on early A12. This in an Australia 1200. It uses a humongous bracket to space the compressor out past the low-mounted alternator.

Here is a USA 1200 with a slightly different setup:

Left-hand Drive

Ecuador

USA Type 1

Specifications

Frigiking dealer-installed package. Larger capacity than 240Z, but less than 510 or 521 pickup

PERFORMANCE
Capacity: 12,500 BTU/hour
Airflow: 180 CFM
Evaporator Coil: 3/8 x .016 cu tubes, 4 rows
 staggered pattern, 12" x 5" x 2-1/2"
 fin series 120 flat aluminum
Expansion Valve: 1-1/2 ton

ELECTRICAL
Fan Switch: Reostat
Thermostat: Ranco type A-30
 Cold cut-out: 28°F ±2°
 Cold cut-in: 36°F ±2°
 Warm cut-out: 58°F ±4°
Fan Motor: Double shaft, single speed, 4600 RPM @ 13.5 V
 11.5 amps maximum current draw
Clutch: Pitts 6" double groove 12V 4.0 amp
Wiring: SAE specification J558a
Overload Protection: Inline fuse 30 amps

COMPRESSOR: York 206 (6 cubic inches)

CONDENSOR: 3/8 x .016 cu. tube, 2 row inline pattern
 13 x 12 x 1-1/2 fin seris 10 fins/inch

GENERAL KIT COMPONENTS: All meet SAE specifications

COMPRESSOR MOUNT KIT
Brackets are 1/4" hot rolled steel, arc welded and painted
Drive Pulley material: ASTMA-159, Class G3000, grey cast iron
 precision machined, balanced and painted
Idler Pulley: Cast iron, fully machined with single-row sealed ball bearing
Attaching Hardware: Grade 5, black, rust resistant
Compressor Drive Belt: Standard automotive quality, 500 section

EVAPORATOR SECTION
Material: High-strength injection-molded plastic case
Knobs: injection-molded plastic

USA Type 2

USA Type Frigette

Frigette Brand. Aftermarket kits still sold at JC Whitney!

Optional Fan

Nissan option flex-fan

Dealer item

From USA catalog:

21060-H1001 FAN-COOLING A12 (standard B110 fan)
21060-A4605, 21060-N0100 FAN-COOLING D=330 FOR TROPICAL USA (330 mm diameter)

Sunny Truck Kit

From October 1979 a uniform kit was offered with DKKC type compressor.

This kit is beautiful and easy to install. Unfortunately the interior cooler unit is bulky and protrudes farther into the passenger legroom than other types.

You need all these parts:

Ass'y indoor "cooler unit" (with integrated air volume switch, evaporator, and blower fan)

air conditioner compressor

V-belt: 814 mm

compressor bracket

crank pulley (double V-belt version)

Twin Condensors (before radiator, radiator horizontal)
One has an electric fan
- Pipe connecting twin condensors

High-pressure flexible pipe (from compressor to condensor)
Low-pressure hose (from evaporator to compressor)
Tube-Liquid Tank to Evaporator

Liquid Tank
- Bracket to mount Tank on core support

Receiver tank (Liquid tank)
Relay (for compressor)
Wiring harness
Capacitor for electric fan

Engine Mounted 9810- Fast Idle Control Device (FICD)
- 14875-G5105 Manifold Connector [right next to carb base plate]
  - Vacuum Hose L=370
- 27654-H8500 FICD Actuator
  - 92551-95W00 Actuator Bracket
- 27720-G2500 FICD Lever
- 92255-G5100 Solenoid Valve
  - 92256-95W00 Bracket
  - Vacuum Hose L=270

Vents may be opened or closed:

Twin Condensors and Liquid Tank with connecting pipes.

Condensor-to-Liquid Tank hose is routed along the top of core support.

Compressor is mounted low on left side of engine.

Cooler Unit lines: Evaporator Inlet & Outlet and drain hose

Legroom

Since the cooler unit takes up some of the passenger legroom, what to do? One enterprising 1200 fan mounted the cooler unit in the dash:

Of course the downside is there is no glove box.

Misc

27630-G1660 COMPRESSOR-COOLER DKKC
27630-W7002 COMPRESSOR-COOLER DKKC [B421]
- JDM Datsun B120 8110-8910
- JDM Datsun 720 L18 7909-8105
92610-G1900 COMPRESSOR-COOLER DKKC [B421]
- B120 8910-
11910-G1661 BRACKET-COMPRESSOR 7804-7907
- 11911-G1661 BRACKET-COMPRESSOR [2nd piece]
11929-H1000 BELT-COMPRESSOR L-810 7804-7807
11910-G1615 BRACKET-COMPRESSOR 7908-8910
11910-95W00 BRACKET-COMPRESSOR 8910-
11929-G1615 BELT-COMPRESSOR L-814 7808-
11925-A0100 PULLEY ASSY-IDLER,COMPRESSOR 7804-7807
11925-G1615 PULLEY ASSY-IDLER,COMPRESSOR 7808-
11917-M0100 BOLT-ADJUST 7804-7907
- 11933-A0100 NUT 7804-7907